Mark Sirangelo, the longtime leader and public face of Sierra Nevada Corporation's space business, has resigned from the company for personal reasons but as part of a "friendly transition," the company confirmed July 2. SpaceNews.com
Mark Sirangelo, the longtime leader and public face of Sierra Nevada Corporation's space business, has resigned from the company for personal reasons but as part of a "friendly transition," the company confirmed July 2. SpaceNews.com
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